Single-Gas vs. Multi-Gas Detectors: A Buying Guide to iGasis and the iAeris3 Confined Space Gas Detector
- Sysinno Technology
- Jan 27
- 4 min read
In industrial environments, gas detectors are not only essential for regulatory compliance, but also a critical investment that affects worker safety, installation cost, and long-term operational efficiency. Selecting the right gas detection solution plays a key role in reducing risk and controlling total cost of ownership.
During the gas detector evaluation and procurement process, many facilities encounter the same challenge:
When multiple gas hazards exist in an industrial site, is it better to install multiple single-gas detectors, or to deploy one multi-gas detector to cover all detection needs?
To support different industrial risk scenarios, Sysinno offers two clearly defined gas detection solutions:
iGasis1 Gas Detector – a single-gas detector designed for fixed locations with clearly identified gas risks, suitable for continuous and long-term monitoring.
iAeris3 Confined Space Gas Detector – a multi-gas detector developed for confined spaces and environments with complex or combined gas hazards, helping reduce installation complexity and overall system cost.
This article provides a practical single-gas vs. multi-gas detector comparison, focusing on risk assessment, installation requirements, and procurement cost considerations, to help safety managers, engineers, and procurement teams determine when to choose iGasis and when the iAeris3 Confined Space Gas Detector is the more effective solution.
What Is a Single-Gas Detector? Application Positioning of iGasis1
A single-gas detector is primarily used in environments where the type of gas hazard is clearly identified and remains consistent. It is designed for continuous, long-term gas monitoring in fixed locations, providing stable and reliable safety protection in industrial settings.
Design Features of the iGasis1 Gas Detector
Detects one specific target gas at a time, ensuring focused and accurate monitoring
Suitable for fixed installation and continuous long-term operation
Can be integrated with existing industrial monitoring and control systems (such as 4–20 mA and RS485)
Simple system architecture, making management and maintenance more straightforward
Typical Applications for iGasis1
Workstations or process areas where the gas type is fixed and well-defined
Mechanical rooms, pipe corridors, equipment surroundings, and underground pipelines
Warehouses or semi-enclosed spaces requiring monitoring of a specific gas
Non-explosion-proof areas in general industrial environments
In these scenarios, the iGasis1 Gas Detector provides a stable and efficient solution for essential gas safety monitoring, helping facilities maintain compliance while controlling installation and maintenance costs.
The Role of Multi-Gas Detectors: Advantages of the iAeris3 Confined Space Gas Detector
When multiple gas hazards may be present in the same environment—such as oxygen deficiency, toxic gases, or combustible gases—a multi-gas detector becomes the more effective and practical solution for industrial safety monitoring.
Core Features of the iAeris3 Confined Space Gas Detector
Simultaneous multi-gas detection, enabling comprehensive monitoring of complex gas hazards
Specifically designed for confined spaces and environments with combined risks, where gas conditions can change rapidly
Can be used as a pre-entry safety verification device before personnel enter confined areas
Suitable for fixed installation, providing long-term and continuous gas monitoring
Common Application Scenarios
Storage tanks, reaction vessels, sewers, underground pipelines, and tunnels
Confined or poorly ventilated spaces
Environments where gas composition may change over time or during the process
Areas that require simultaneous monitoring of oxygen, toxic gases, and combustible gases
Contrary to common perception, the iAeris3 Confined Space Gas Detector is suitable for long-term monitoring, especially in fixed locations where gas hazards are more complex.
It is designed to provide continuous gas detection in environments where gas composition may vary over time, ensuring reliable safety monitoring for confined spaces and other high-risk industrial areas.
In multi-gas monitoring scenarios, wiring and installation costs often become the key factor.
In multi-gas monitoring scenarios, wiring and installation costs often become the key factor.
Practical Situation of Using Multiple Single-Gas Detectors
When a site requires simultaneous detection of multiple gases, using single-gas detectors typically means:
Multiple devices need to be installed
Each device requires independent wiring, installation, and configuration
Increased construction time and labor costs
Higher complexity in ongoing maintenance and management
Actual Cost Advantages of the iAeris3 Confined Space Gas Detector
By using a single iAeris3 Confined Space Gas Detector to monitor multiple gases simultaneously, you can:
Significantly reduce the number of devices
Lower wiring and installation complexity
Simplify system integration and ongoing maintenance
Effectively reduce overall deployment and long-term total cost of ownership (TCO)
In other words, in environments with multi-gas monitoring requirements:
The iAeris3 Confined Space Gas Detector is not only a safety consideration, but also a choice for improving installation efficiency and controlling costs.
How to Choose Between iGasis1 and the iAeris3 Confined Space Gas Detector?
The key to choosing is not whether the device is “single-purpose or multi-functional,” but rather the actual risk profile and management efficiency.
Procurement and Configuration Recommendations
Single gas type with clearly defined risks → iGasis1 Gas Detector
Multiple or variable gas types → iAeris3 Confined Space Gas Detector
Multi-gas requirement with a desire to reduce wiring and installation costs → iAeris3 has a stronger advantage
Confined spaces requiring explosion-proof equipment → Evaluate explosion-proof certified devices separately
Reminder for Explosion-Proof Environments
In practice, explosion-proof areas often involve combustible gases and ignition sources. Both the iGasis1 and iAeris3 Confined Space Gas Detector are not designed for explosion-proof applications, and are not recommended for use in environments requiring explosion-proof certification. If the site is classified as an explosion-proof zone, the appropriate gas detection equipment with relevant explosion-proof certification should be selected in accordance with applicable regulations.
Evaluating Gas Detection System Configuration?
When there is a need for multi-gas monitoring, the choice of equipment will directly affect:
Wiring and installation costs
The number of devices and ongoing maintenance burden
The total cost of ownership (TCO) for long-term use
Sysinno can assist procurement teams and project managers with:
Comparing the applicability differences between the iGasis1 Gas Detector and the iAeris3 Confined Space Gas Detector
Evaluating the cost-effectiveness of multiple single-gas detector configurations versus a single multi-gas detector
Providing equipment selection recommendations based on actual site requirements
👉 Contact us via email: service@sysinnotec.com to receive procurement and configuration advice for gas detection systems.
